Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
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Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
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Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
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Assertion and Reason Questions for Class 9 Maths Chapter 10 Circles
Last modified on:4 years agoReading Time:5MinutesAssertion and Reason Questions for Class 9 Maths Chapter 10 Circles Directions: Choose the correct answer out of the following choices : (a) Assertion and Reason both are correct statements and Reason is the correct explanation of Assertion.(b) Assertion and Reason both are correct statements but Reason is not the correct…
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Assertion and Reason Questions for Class 9 Maths Chapter 2 Polynomials
Last modified on:4 years agoReading Time:10MinutesAssertion and Reason Questions for Class 9 Maths Chapter 2 Polynomials Directions: Choose the correct answer out of the following choices :(a) Assertion and Reason both are correct statements and Reason is the correct explanation of Assertion.(b) Assertion and Reason both are correct statements but Reason is not the correct explanation…
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Assertion and Reason Questions for Class 9 Maths Chapter 15 Probability
Last modified on:4 years agoReading Time:4MinutesAssertion and Reason Questions for Class 9 Maths Chapter 15 Probability Directions: Choose the correct answer out of the following choices :(a) Assertion and Reason both are correct statements and Reason is the correct explanation of Assertion.(b) Assertion and Reason both are correct statements but Reason is not the correct explanation…
